import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login'
import Home from '../components/Home'
import Welcome from '../components/Welcome'
import Users from '../components/user/Users'
import Rights from '../components/power/Rights'
import Roles from '../components/power/Roles'
import Cate from '../components/goods/Cate'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

const routes = [{
  path: '/',
  redirect: '/login'
},
{
  path: '/login',
  component: Login
},
{
  path: '/home',
  component: Home,
  redirect: '/welcome',
  children: [{ // Welcome是Home的子路由
    path: '/welcome',
    component: Welcome
  },
  {
    path: '/users',
    component: Users
  },
  {
    path: '/rights',
    component: Rights
  },
  {
    path: '/roles',
    component: Roles
  },
  {
    path: '/categories',
    component: Cate
  },
  {
    path: '/params',
    component: Params
  },
  {
    path: '/goods',
    component: GoodsList
  },
  {
    path: '/goods/add',
    component: Add
  },
  {
    path: '/orders',
    component: Order
  },
  {
    path: '/reports',
    component: Report
  }]
}
]

const router = new VueRouter({
  routes: routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //     next()  放行    next('/login')  强制跳转
  if (to.path === '/login') {
    // 直接放行
    next()
  } else {
    // 获取token
    const tokenStr = window.sessionStorage.getItem('token')
    if (!tokenStr) {
      console.log('找不到token，直接进入登录界面')
      next('/login')
    } else {
      // 直接放行
      next()
    }
  }
})

export default router
